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    Liquid composition comprising a phousphorus based additive, its use and material or composition obtained following polymerisation of composition
    23.
    发明授权
    Liquid composition comprising a phousphorus based additive, its use and material or composition obtained following polymerisation of composition 有权

    公开(公告)号：US11629212B2

    公开(公告)日：2023-04-18

    申请号：US16316360

    申请日：2017-07-11

    Applicant: ARKEMA FRANCE

    Inventor： Pierre Gerard ,  Pierre Escale

    IPC: C08F265/06 ,  C08J5/10 ,  C08K5/5313 ,  C08J5/04 ,  C08J5/24 ,  C08F220/14 ,  C08L33/12 ,  C08L51/00 ,  C08K5/00

    Abstract: The present invention relates to a liquid composition comprising a monomer, a (meth)acrylic polymer and at least one flame-retardant substance (FD1) chosen from a phosphorus-based additive. In particular the present invention it relates to a liquid composition comprising a monomer, a (meth)acrylic polymer and at least one flame-retardant substance (FD1) chosen from a phosphorus-based additive that can be used as a syrup and especially as a syrup for impregnation and for the preparation for improving the fire resistance of a thermoplastic polymer or matrix obtained after polymerization of the syrup. Also concerned is a thermoplastic material obtained after polymerization of the liquid composition or syrup. The invention also relates to a process for manufacturing such a liquid composition or syrup. The invention also relates to a process for impregnating a fibrous substrate of long fibers with said liquid composition or syrup. The invention also relates to a fibrous substrate preimpregnated with said liquid composition or syrup which is useful for manufacturing composite parts. The present invention also relates to a process for manufacturing mechanical parts or structural elements made of composite material and to mechanical parts or structural elements made of composite material obtained via a process using such a liquid composition.

    Wind turbine blade made of thermoplastic polymer composite, part of said blade and production method
    24.
    发明授权
    Wind turbine blade made of thermoplastic polymer composite, part of said blade and production method 有权

    公开(公告)号：US11624347B2

    公开(公告)日：2023-04-11

    申请号：US16492958

    申请日：2018-03-13

    Applicant: Arkema France

    Inventor： Virginia Bozsak ,  Guillaume R. Cledat ,  Pierre Gerard ,  Mark Hiemstra ,  Henk Minnema ,  Dirk Jan Kootstra

    IPC: F03D1/06 ,  B29D99/00

    Abstract: The invention relates to a wind turbine blade (1) comprising an outer casing formed at least in part of panels (3) of thermoplastic polymer composite, defining a leading edge (4) and a trailing edge (5) of the wind turbine blade, and at least one longitudinal stiffening member (6) made of polymer composite, extending along a longitudinal axis (A) of the wind turbine blade inside said wind turbine blade (1), said stiffening member (6) being arranged between at least one panel defining the leading edge (4) and at least one panel defining the trailing edge (5), characterized in that the thermoplastic polymer composite comprises a fibrous reinforcement and a (meth)acrylic thermoplastic polymer matrix and in that at least one panel (3) of thermoplastic polymer composite is connected to the stiffening member (6) by a weld-type interface (7).

    Method for producing a multilayer composite material, multilayer composite material obtained by the method and mechanical parts or structures produced with said material
    26.
    发明授权
    Method for producing a multilayer composite material, multilayer composite material obtained by the method and mechanical parts or structures produced with said material 有权

    公开(公告)号：US11040504B2

    公开(公告)日：2021-06-22

    申请号：US15997026

    申请日：2018-06-04

    Applicant: Arkema France

    Inventor： Pierre Gerard

    IPC: B32B27/12 ,  B29C70/54 ,  B32B3/08 ,  B29C70/74 ,  B32B3/26 ,  B32B5/18 ,  B29L31/00 ,  B29K23/00 ,  B29K25/00 ,  B29K33/04 ,  B29K55/02 ,  B29K81/00 ,  B29L9/00

    Abstract: Method for producing a multilayer composite material, according to which said multilayer composite material, multilayer composite material obtained by the method and mechanical parts or structures produced with said material. The present invention concerns a method for producing a multilayer composite material, according to which said multilayer composite material comprises one or a plurality of thermoplastic polymer layers, one of which is a surface layer (1) comprising a thermoplastic polymer A, and comprises a substrate layer (2) comprising a thermoplastic (meth)acrylic polymer matrix and a fibrous reinforcing material, said method involving cutting at least one window in the thermoplastic polymer layer or layers and at least one window in the fibrous material, said windows being intended to coincide; impregnating the fibrous material with a liquid (meth)acrylic syrup such that it fills said windows, or inserting a transparent thermoplastic plate into said window; polymerizing the liquid (meth)acrylic syrup impregnating the fibrous material and present in the absence of a thermoplastic plate in the window or windows. The invention is applicable applies to the production of mechanical parts of structured elements or decorative items made from multilayer composite material and requiring transparent windows.

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